<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>
    </swiper>
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 商品信息主体区域 -->
      <view class="goods-info-body">
      <!-- 商品的名字 -->
      <view class="goods-name">{{goods_info.goods_name}}</view>
      <!-- 收藏 -->
      <view class="favi">
        <uni-icons type="star" size="18" color="gray"></uni-icons>
        <text>收藏</text>
      </view>
      </view>

    <!-- 运费 -->
    <view class="yf">快递:免运费</view>
    </view>
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    
    <!-- 商品导航 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import {mapMutations, mapState,mapGetters} from 'vuex'
  export default {
    computed:{
      ...mapState('m_cart',[]),
      ...mapGetters('m_cart',['total']),
    },
    watch:{
      // total(newVal){
      //   const findResult = this.options.find(x => x.text === '购物车')
      //   if(findResult) {
      //     findResult.info = newVal
      //   }
      // }
      total:{
        handler(newVal) {
          const findResult = this.options.find(x => x.text === '购物车')
            if(findResult) {
              findResult.info = newVal
            }
        },
        immediate:true
      }
    },
    data() {
      return {
        goods_info: {},
         options: [{
        			icon: 'shop',
        			text: '店铺',
              infoBackgroundColor:'red',
        			infoColor:"white"
        		}, {
        			icon: 'cart',
        			text: '购物车',
        			info: 0
        		}],
        	    buttonGroup: [{
        	      text: '加入购物车',
        	      backgroundColor: '#ff0000',
        	      color: '#fff'
        	    },
        	    {
        	      text: '立即购买',
        	      backgroundColor: '#ffa200',
        	      color: '#fff'
        	    }
        	    ]
      }
    },
    onLoad(options) {
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods: {
      ...mapMutations('m_cart',['addToCart']),
      async getGoodsDetail(goods_id){
        const {data:res} = await uni.$http.get('/api/public/v1/goods/detail',{goods_id})
        if(res.meta.status !== 200) return uni.$showMsg()
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,'<img style="display:block;"').replace(/webp/g,'jpg')
        this.goods_info = res.message
      },
      preview(i){
        uni.previewImage({
          current:i,
          urls:this.goods_info.pics.map(x => x.pics_big)
        })
      },
      onClick(e) {
        if (e.content.text === '购物车') {
          // 切换到购物车页面
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      buttonClick(e) {
         // 1. 判断是否点击了 加入购物车 按钮
         if (e.content.text === '加入购物车') {
      
            // 2. 组织一个商品的信息对象
            const goods = {
               goods_id: this.goods_info.goods_id,       // 商品的Id
               goods_name: this.goods_info.goods_name,   // 商品的名称
               goods_price: this.goods_info.goods_price, // 商品的价格
               goods_count: 1,                           // 商品的数量
               goods_small_logo: this.goods_info.goods_small_logo, // 商品的图片
               goods_state: true                         // 商品的勾选状态
            }
      
            // 3. 通过 this 调用映射过来的 addToCart 方法，把商品信息对象存储到购物车中
            this.addToCart(goods)
      
         }
      },
    }
  }
</script>

<style lang="scss">
swiper {
  height: 750rpx;
  image {
    width: 100%;
    height: 100%;
  }
}
.goods-info-box {
  padding: 10px;
  padding-right: 0;
  .price{
    color: #C00000;
    font-size: 18px;
    margin: 10px 0;
  }
  .goods-info-body{
    display: flex;
    justify-content: space-between;
    .goods-name{
      font-size: 13px;
      margin-right: 10px;
    }
    .favi {
      width: 120px;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      border-left: 1px solid #efefef;
      color: gray;
    }
  }
  .yf{
    font-size: 12px;
    color: gray;
    margin: 10px 0;
  }
}
.goods_nav{
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
}
.goods-detail-container{
  // padding-bottom: 50px;
}
</style>
